MC68376BGMAB20 Freescale Semiconductor, MC68376BGMAB20 Datasheet - Page 363

• Manufacturer Part Number: MC68376BGMAB20
• Description: IC MCU 32BIT 8K ROM 160-QFP
• Manufacturer: Freescale Semiconductor
• Series: M683xxr

Specifications of MC68376BGMAB20

• Core Processor: CPU32
• Core Size: 32-Bit
• Speed: 20MHz
• Connectivity: CAN, EBI/EMI, SCI, SPI
• Peripherals: POR, PWM, WDT
• Number Of I /o: 18
• Program Memory Type: ROMless
• Ram Size: 7.5K x 8
• Voltage - Supply (vcc/vdd): 4.75 V ~ 5.25 V
• Data Converters: A/D 16x10b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 160-QFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Program Memory Size: -

D.6.7 SCI Status Register
SCSR — SCI Status Register
TDRE — Transmit Data Register Empty
TC — Transmit Complete
RDRF — Receive Data Register Full
RAF — Receiver Active
IDLE — Idle-Line Detected
OR — Overrun Error
NF — Noise Error Flag
MC68336/376
USER’S MANUAL
RESET:
15
0
SCSR contains flags that show SCI operating conditions. These flags are cleared
either by SCI hardware or by a read/write sequence. The sequence consists of reading
SCSR, then reading or writing SCDR.
If an internal SCI signal for setting a status bit comes after reading the asserted status
bits, but before writing or reading SCDR, the newly set status bit is not cleared. SCSR
must be read again with the bit set and SCDR must be read or written before the status
bit is cleared.
A long-word read can consecutively access both SCSR and SCDR. This action clears
receive status flag bits that were set at the time of the read, but does not clear TDRE
or TC flags. Reading either byte of SCSR causes all 16 bits to be accessed, and any
status bit already set in either byte is cleared on a subsequent read or write of SCDR.
0 = Transmit data register still contains data to be sent to the transmit serial shifter.
1 = A new character can now be written to the transmit data register.
0 = SCI transmitter is busy.
1 = SCI transmitter is idle.
0 = Receive data register is empty or contains previously read data.
1 = Receive data register contains new data.
0 = SCI receiver is idle.
1 = SCI receiver is busy.
0 = SCI receiver did not detect an idle-line condition.
1 = SCI receiver detected an idle-line condition.
0 = Receive data register is empty and can accept data from the receive serial
1 = Receive data register is full and cannot accept data from the receive serial
0 = No noise detected in the received data.
1 = Noise detected in the received data.
0
shifter.
shifter. Any data in the shifter is lost and RDRF remains set.
0
NOT USED
0
0
0
REGISTER SUMMARY
9
0
TDRE
8
1
TC
7
1
RDRF
6
0
RAF
5
0
IDLE
4
0
OR
3
0
NF
2
0
$YFFC0C
MOTOROLA
FE
1
0
D-45
PF
0
0